Die-casting machine



C. J. SYKES Oct. 30, 1928. 1,690,081

DIE GAS-TING ldACI-IINE Filed Sept. 1927 3 Sheets-Sheet 1 IN VEN TOR:

A TTORNEY.

IJGWLOBT OctTSUIT 928;

'c. J. SYKES DIE CASTING MACHINE Filed Sept. 2, 1927 KSheefs-Sheet I N VEN TOR:

A TTORNEY.

3 sheetshee' 3 Oct. 30, 1928.

c. J. S YKES DIE CASTING MACHINE Filed Sept. 2, 1927 1 v n-Enem es T he s e ie f he. ie i e be e d wea e Patented Oct. 30,1928.

takin s .1. sins; orcmomo; IIjLmoIs; Slams to tame :rs maximums cmoaeo; nimnors,

s am-as; al a Seaman, is'i. sciatic. 217,140.

kinda. i Q lt sneeessary n die casting machines that wi esi rahlep re e iee ltl ew 1othe present invention is. to produce asimple m na I eeh n smibr m a eiwi ha of the die'from and toward; the other half.

a "and pressing it againstthe latter pre- .spectively any paratory tothe injection of the metal into :Th slzie .i teres, 1 .n t ereby 1 ey mention charact zed will he inetterb poi e ou -W P .n eii ty i th la ms fe1"; fu i ref rees? may be hedyfi t eI el l iieeifleail d de qri t ee tak n i ewne t e with ee eemee yinedrawin s. where n;

F an e s a ee jel' weti l tth s shi mbedyin t Pre e t inven i Ei is .eleve ieaw an, w t-reed scale; eh w ne he opera ing me ha sm 11 tha ovab die el ment; F i a: ne s m l r t s. .2

h nedi .e ent eeitie s 2 t tepeliteen cfim being om tted in each belief the o bl e 4; i e .ri ts-l e siae te e F g; 2 em the lemma s 3 t am memet ns. s av s-F s. 6. 17 es et e s n a enl d sm ett en -on lines55, 6.6 and 7-7,.6f

th o i 'on e npper. P r on f h h f a, .d e Q ti e. met bille- Me e th b 3; being stationary andthe being slidable along the frame from and tQWard the member a n the a r ee eeetsbe the movable die member is carried by a long slide 4.- suitably guided bythe frame.

;'Ifhe machine is provided with a suitable transverse cam shaft 5 below the upper part of the frame and beyond the left hand end of the slide. A long bolt-like rod 6 is rigidly supported from the frame at a suitable distance above the die, the rod extending lengthwise of the machine. In the arrangement shown, the bar is supported at its ends in pedestals, 7 and 8 rising respectively from the left hand end of the machine and from the frame on the right hand side of the die.-.

Fixed to the shaft 5 are two .cam disks 9 and 10 each of which has a cam groove 11 on its inner side. Two vertical bars 12 extend up:

.werdly from apointhat-Ween. the two e t diee invention and, Oil ts objects and advantages,

er sp ed s at h m afle e t h upperend'pf al calm plate 22 extents intothe sides. '1 These: pinsor projections eiitend through elongated slots lfi in the a ar nesof the 12. On the lower endot' estate the bars; 12 s a I am roller 1?; nggeawaa one of. the continuous cainfgroovpsi[.Ilitarefore, asthe shatt. myqIy's;-.;the :bars moved upyand; down, ,being guided. their upper 'enc s by pin and slot connections w th tllie r od 6. "lhe lowerends of the bars are causedto move in an ppmgimt lx vertical direotion as the cam s revlve y means-of a long arm 18 pivoted atone GHQ to atlases, ends. 9f the bars nd its paws, a d to a remote point onl the Ira-file ehine,

a sma 1 angle above. below a hor zp tal position as the bars rise and falll As. est

' in dFated at iejg a e arm m ng I ljqti gh The blp kjia on sea .6 is; provided khii at) r spaee betwegn these ears: andisp'on- Y tot e als ymeanso a transverse pin 23. The lower, end. ,of. the'. cam plate. is j fastened tothe slideA 24.

Thecam lat'e lies in t-lie space between.the 1'2. n th'e'ca m plate is along slotgvithin w i h lie r e -fi wa e wi 6 we 4. 21; through e same and through the -bars.- lik s bt i. the C g ilfpliite 9pmam n Q! we we 2M. i filli upper end 0 the cam slot; dausing the'cam plate to be swung toward the left and thus p ses. t fi ie gli s ti l r ad at an y Y an l 8511011. e h e'n' li elbi Mane-uppe s cthe a ea pseseae' 28s. th parts are. so prqpp gtioned thatavhert the; bars W were. eit meme. po it ni by iii! only they are slightly vertical, so that the swinging movement of the cam plate {or a given downward movement of the bars is very small compared to the swinging movement of the cam plate for a corresponding downward travel of the bars while the cam roller is in section 27 of the slot. In other words, the travel of the movable die member is rapid as itapproaches the stationary memher, and, as it is about to contact with the stationary die member, its movement becomes very slow, but it is urged against the stationary die member under great pressure due to the powerful wedging action of the almost vertical lower end of the cam slot. Consequently the two halves 0t the die are pressed together with great force when the die is closed while the major portions of the movements, in both directions, of the movable die member are rapid and thus permit the die to be uickly opened and closed.

VVhi e I have illustrated and described with particularity only a single preferred form of my invention, I do not desire to be limited to the exact structural details thus illustrated and described; but intend to cover all forms and arrangements which come within the definitions of my invention constituting the appended claims.

I claim:

1. In a machine of the character described, a die having a movable member, a reciprocatory device movable transversely with respect to the path of said member, an element connected to said member and having a slot inclined with respect to the path of said reciprocatory member, and an actuator carried by said device and extending into said slot, the slot being so shaped that movement of said element "for a given length of travel of said device is very small when the actuator is near one end of the slot as compared with the movement of said element for a corresponding length of travel when the actuator is at other points in the slot.

2. In a machine of the character described, a die having a movable member, an element connected to said member and having a slot extending transversely with respect to the path of said member, and a reciprocatory de vice having an actuator extending into said slot, the slot being so shaped and the direction of movement of said device being such that. the extent of travel of such member for a given length of movement of said device is very small while said member is near dieclosing position and is much greater at other points in the travel of said member.

In a machine ol the character described, a die having a movable member, a swinging element having a slot extending transversely with respect to the path of said movable member, aconnection between said element and said member, and a reciprocatory device having an actuator extending into said slot, said slot being so shaped that the swinging movement of said element. for a given travel o't' the actuator is much when the die is almost closed than at other times.

l. In a machine oi the character described, a die having a movable member, a reciprocatory device movable transversely with respect to the path of said movable Il'lCll'llJGl, an element pivotally supported at one end and connected to said member at the other end, said element having a slot inclined with respect to the path of said device, the inclination of the slot being smaller at one end of the slot than at other points, and an actuator projecting from said device into said slot.

5. In a machine of the character described, a frame having a horizontal top portion, a die on the top of said frame and having a member movable along said horizontal top portion bet-ween a position in which the die is closed and a position in which the die is open, an element mounted at its upper end on the frame for swinging movements in a plane parallel with the path of the movement of said movable die member, a linl; connecting the lower end of said element with said movable die member, a device reciprocable in the vertical direction, aid element having a slot inclined to the vertical, one end of the slot being inclined to a lesser degree than other portions of the slot, and an actuator carried by said device and projecting into said slot.

In testimony whereof, I sign this specification.

CHARLES J. SYKES. 

